bigio



Sept. 24, 1929.

A. Blcslo TRAFFIC: SAFETY DEVICE 2 Sheets-Sheet 1 Filed Sept. 25 1924lA. BIGIO 2 Sheets-Sheet 2 TRAFFIC SAFETY DEVICE Filed Sept. 25. 1924Sept. 24, 1 929.

inflated senza-19291 UNITED; STATES ALBERT IBIGIO, F NEW YORK, N. Y.

PATENT oFFlcEQ TRAFFIC-SAFETY DEVICE I A.Am-I cation tiled S'eptember25,1924. Serial No. 739,842.

My invention relates to an improvement in railway crossingb protectordevices and'is especially adapt-ed to the protection ofvehlc- .ulartraffic, and incidentally rail ay traffic,

5 at points where the roadnfor vehi les and the roadbed. of the railwayintersec and com monly known as grade crossings.

I One of thenovel features of y device relates to -a method of signallig, for both forms of traiic, which is initiated by the railway-trafiiconly, and through such initia tion, to cause a, certain'automaticsequence of events'within the system-herein outlined to Y .v occur, in amanner to be hereinafter described in detail.- i

Anotherdistinctadvantlage of my device vcomprises the utilization ofmeans which, while actin as guard gates against encroach-` meit of rallright of way, after the signals and sequences 4have been initiated,whereby ,said guar ingv means-will act as a sweep, with .fa tendency toclear. the grade crossing or rail fright of way of obstruct-ions. Y

Another advantage of my device is 'that inthe event such guardin devicesare interfered with, in the norma operative. function Vof closing therail rightof way as above out-v lined that this interference with thefunction thereof or the preventing of such functioning '3h isimmediately transmitted by signals to the lates to the construction,-whereby trains are permitted`tooperate in either` direction and` thesystem will operate as described. This andA other features willappear-as the specification herein proceeds.

In the drawingr Fig. 1' is a fragmentary plan view offa railway gradecrossing showing the gates in operative closed against vehicular traic.-

position Fig.. 2 is a side elevation of either of said gates 1n anopen'position for permitting the vehicular traliic to cross the rails.

Fig. 3 shows one form. of a type of mechanism for operating to close andopen the sald guard gates.

Fig. 4 shows an end view of a train vehicle in gperative position withthe operative conac l v Fig. 5 is a diagrammatic hookup of the electriccircuits whereby the train control mechanism will cause to operate, and

Fig. 6 is a separate diagrammatic view of the electric signal controlsystem shown apart from Fig. 5 for the purpose of clarity.

In the plan view, Fig. l, there is showna railwayroadbed comprisingrails and ties, generally denoted by R, and traversing this roadbed atright. angles thereto is a vehicular both sides.

As indicated in Fig. l, the gates G1 and G2, for guarding the railcrossing against vehicular'trafiic, are shown closed, they being sup#ported for swinging movement -upon gate post P at the top of which ismounted a visual signalling device such as any suitable Atype of railwaylantern L having onopposite Sides the usual red and green lights forindicating danger or clear signals. 1 In the position as traffic, and inthis instance the green lights show up and down the rail right of wayand the red lights therein show the opposite sides against vehicular.traflic, thereby giving warning. These lights will be continuouslylighted lsc that when the gates are open, then the red lights showagainst `the rail traiiic and the green lights show clear for vehiculartraiiic. y I

As a means for acting as a stop for the operating gates, there'isarranged on the opposite side of the railway, and opposite to theoperative mechanism' for the gates, which will later be described, asuitable form of gate stop S which in the present instanceiscOnstructed'of a piece of plain angle-iron which may be'suitablyburied in the ground adjacent the 'roadbed as at A, 2. rThe guard gate-right of Way ot 'any desirable width, generally denoted by V, betweenthe arrows on -`shown, the gates are closedagainst vehicular .both sidesof said sign so that in stop position either against the train or,vehicular traiiic,

the sign contributes the further warning` against movement of'eithertraffic, according v to setting and this sign is indicated at'B,

Figs. 1 and 2. p

Oneorm of preferred means for operat- Ving to open and close gates, uponactuation of the control mechanism there is shown in Fig. 3 a concretepit Cwhich is preferably -formed in the ground below the level ofthelroadbed R and adj'acentthe same. on opposite sides as shown in Fig.' 1.This pit is preferably made in such a manner as to irlake it tamper/andWater proof.. Within the pit Ihave located an electric motor. generallydenoted by E in Figs. 3 and 5 and this elec-- tric motor has arrangedupon one end'of its armature shaft, a worm drive D whlch 1n turn ymeshes with a worm wheel W which is'frictionally engaged upon a jackshaft/J which is preferably rotatably held in a bracket support K whichis suitably and firmly 'aiixed to the bottom of the pit. 'Under certa-incon.

ditions the worm wheel W is re'e to revolve with the shaft J owing tothearrangement of a friction drive means M shown on the left sidethereof, said friction drive in turn being" mounted upon a bevel gearsleeve N mounted within the bearing portion of the bracket K, and thebevelledgear O which is aiiixed to said sleeve is thereby caused to'revolve by the motor driving the said worm wheel W. In turn the bevelledgear O meshes with a bevelled gear sector Q, which is in turn mountedrigidly at the lower end of the tubular stopgate post P, said tube beingindicated as at T, Figs. 2 and 3.

In-the preferred form of construction, and in order to eliminate certainparts which may otherwise be used in their installation, I preter,owingto the short time in which saidV gates will be in use in guardingthe rail right of way, that the motor shall continue to rotate and actas locks, during the period 'ofA o eration of the gates as closuresuntil a c ange of cycle occurs and they return to their normalpositions, to permit vehicular" trailic to cross.

To this end, when the motor `E revolves it causes the worm wheel W torevolve and this in turn drives the gear O which in turn drivesthesector Q, and according to the direction ;of the rotation of the motor Ethe gates will be driven to their full operative closed or open positionand will be thereby stopped in their position by the gate stops Swhetherthe gates are in open or closed position against' vehicu# lar trahie. y

UponY reaching either one of thesepositionsand until such period' as thesequence of control, later to be described, is completed the motors willcontinue torun,I driving the worm 18 and 18'.'-

drive the worm wheel,v W andthe friction mechanism will rthereupon slip'until the guarding o eration 'has been completed and thereafter t ecycle is reversed, andthe gates return to normal openvehi'cle position,after which the motor will cease rotating leaving the gates in thedesired position.

As a means for causing the motor t'o commence operating uponthe-rotating activity of the system andto" later cause the motor' tocease operating upon the completion of the gg cycle, I have hereinoutlined, in more or less `diagrammatic form, one of such circuits aswould operate the rail control mechanism as above described;

By referring to -5, therewill be noted 85 a pair of conductive mainwires 1 and 2 and which wiring may be continued along the rail right ofway for furnishing the desired electric power from any suitable source,not

shown. From the main 1 and 2 there leads oo two connections 3 which runto the interior Aof the pit andfrom these upwardly through the tube. ofthe shaft T to two warning signal lights L andthese two lights arejoined in series by another wire 4 so that these lights 95 arecontinuously lit sfthat their opposite red and een signals may exhibitin favor of or against traiic according to the position of the gates G.-

Leading to another point, V shown in the 100 right handside ofthedrawing are another pair of. electric conduits 5 and 6 vboth Aofwhich run to opposite sides to an oscillating switch generally denotedby7 in the present instance this form of switch being shown as pivoted at8 for operating either to the right hand as shown'or on the left hand asshown, thereby closing or opening the circuits which arel controlled byswitch points 9 and 10 or are shown in the drawing as being -in contactor under the lever 7, by dotted. lines.

This oscillating lever `may be mechanically or electrically connected toa switch arm ccn- A'an-equivalent pair `of switchv points which 110 trolmechanism preferably placed at the opposite end of said ,control circuitand this being generally denoted by a base 10 having a pivotallyoperated-crank arm 11 and an operative connecting means between .bothsaid switch and arm control meanscompris- 12o ing a connecting rod 1 2so that any movement is transferred tothe switch 7*-8-9-10 from thecontrol arm 11.

.\ In the positipn as' shown of switch 7, the

current through lthe main 14-2 flows through i ias the lead 5 and downthrough the leads 13, 14, 15, 16 and 1'( and the terminal end of thesewires is connected toA oppositely disposed contact elements generallydenoted by i readiness for operation, they are, in operation closed by abridging contact means which is carried by v.the train vehicle X asindicated in Fig. 4 and which Will be later described. l

From the ends of contacts 29-29, are two leads 24, 25 which in turn areconnected to one terminal each of the two motors E. The oppositeterminals Aof the motors E, are in turn connected to leads 26, 27, whichare connected to insulated contacts 28'-28,' Fig. 5, at right side Aofdiagram, as shown. These last contacts are not in electrical connectionwith the source of power, vexcept as-will be .hereinafter described..v

Y At the Vleft hand side of diagram Fig. .5, isshown a sliding contactcontrol element similar to that just described, and its manner of hookupis as follows; the insulated. contacts' 29-29 areconnected .to each ofthe motor terminals',l in series, by leads 30,31, 'and the oppositeterminals of each motor are connected by leads 32, 33 to contacts-34,34, respectively,so that in efect, through this control circuit,'themotors E are arranged in reverse series, thatis to say that, according"pto approach of train, in either direction, with circuit closingshoe,to be later described, the .motors E are energized to cause a righthand, or a left hand rotation of the motor armatures, according to whichgroup of con 4tacts first energize the motors, which then determines thesequence o f operation of the gates, starting fromeither side or end ofthe control system, in conjunction with the last `position of theswitch-control mechanisms l 7 8-9-10 and 1011.

By referring to Fig. 4r,Y there is therein disclosed an end elevation ofa railway vehicle, generally denoted by X, which has attached thereto aycircuit control means for causing the sequential operation of theforegoing.

l. described safety mechanism. While it is lhere shownmore or lessdiagrammatically, i th'eprime essentials of this simple form, ofactuator ma be fully understood from the following t any convenientpoint at the underside of the railway vehicle, and vpreferi ably', thismay be on the motive vehicle, there l is arranged any desired form ofsupport 34', which may carry at its outer ends, for operag tion ineither running direction lof the train, a switchthrowing means .3 5-36.This last arrangement cooperates 'with the control shown motor, E, whicswitch 7 8-9--10 to energize the system to initiate action, upon'approach of atrain to the grade crossing protected by my device. l

" Upon the support 34', is located an insulator 4plate' 37, which inturn supports bridgingcontact means 38,v 39,' which when in operativeposition, are in a plane to con'- tact with the circuit control contactmeans continued to other points along the line to energize likecrossing' controls, 'as herein described.

The action or operation of my device is as follows:

The rail guard-gates G in Fig. 5 are guard- 'ing the rail rightof way,as shown, permitting vehicular cross tralhcin the direction-of thearrows-41, both ways, but blocking rail traine i'n the Vsense that thegates in this position, are in control of. a signal-'light svstem, latertov be described, which shows clear to vehicular. traiiic butdanger torail traic'.

Upon ,the approach, to the grade crossing, by a train,`and at anysuilicient distance therefrom, the train by the previously notedmechanisxn, first strikes the control switch 7--87- 9--10 and sets itVto close the circuit as shown, which includes, from the main 1-2, thefollowing; -leads 5 6,- 13.-.-19, 14-20, contacts 18-.18 and 23-23,contacts 18'-18, and 2323, through leads 15-20, .2l-16. At this pointthe circuit is not closed, but is operatively closed upon the train thenreaching the control contacts v18--23-28-29,

- rst group, whereupon the contact bridge 38 closes contacts 23-28, andsimultaneously contact bridge closes contacts 18-29-.

(The foregoing action, throughthe leads, etc.. previouslynoted causesthe first 'gate G to close through the o erationfof the lower isoperatively ,con-

nected to said gate asshown in and described forl Fig. 3, thus causingthe said gate to move to its vehicular barring position-Y, as

a shown in dotted lines in Fig; 5. In sequence,

thereafter, the upper motor E is then actuated by the second group ofcontrol contacts being closed by the' bridge 38 .closingthe controlcontacts 1 8-'-29, thus energizing said motor E andthroughtheoperativeconnection setl forth for Fig. 3, the upper gate iscaused toclose the opposite side of the -r'ail right of way against vehiculartraliicl Upon the train leaving zone, the motors E cease to 'operateleaving the two gates in closed position, but clear for the passage of.the train..

When the train has passed the'crossing, at

a predetermined point, it engages with. the

the control contact manner as described for the first set of con- 4trolcontacts, with the difference, however,

that the contacts 18.-23, and-293fi are so arranged that they causethecurrent to enter the motors E in a reverse direction thus causing thegates to be operated'back to original open vehicular traiic position.' v

This is accomplished ,by the train bridge Contactg closing, first thecontrolcontacts 29-34' in Ithe advance group, thus operating to causethe lower shown motor E to open its gate',vand4 then sequentially toadvance upon and bridge the second control contacts 25J- 34, thusenergizing' the upper shown motor E alsoin a reversedirectiQn,'causing-the upper gate G? also open to vehicular traiicandclosed against train traffic. Thereafter as the train leaves thecontrol'zone, the motorsy E cease to operate and the system is left incondition `to-be operated by any train coming from either direction. Ifit so happens that `the next train also. moves into the control zonefrom the same direction las the-previous train, i. e., in the directionof the arrow 40, the system is set for the above described sequenceof-operation. However, if a train should come from a direction oppositeto the arrow 40, then the switch control arm 11 is intercepted, moved toits opposite angular position,'and through the connecting rod, orequivalent means 12, the switch lever 7 ,is thrown toA a positionopposite to that shown in Fig. '5, thus closing contacts 9-10 andsetting the entire circuitv into a reverse cur-r rent control, therebycausing the entire circuitand apparatus to respondv in the same sequencetooperate the gates to close and open under the control of saidoppositely moving train;

' In the last noted instance thetraincontact bridge 37, after which 7has -beenthrowin operates to bridge control contacts SZW- .34 tof,operate the upper motor E to yclose the'gate Gr2 against vehiculartraic,then the second control contacts 23-34 operate the second lower`motor E, closing-lower gate'Gr1 against vehicular traffic, and aspreviously' describedfor the train travelling in the direction of thearrow 40, the first control contacts 18'-29 of fthe second group opengate G2, second control contacts 18-29 open secojnd gate Gr1 tovehicular traic and the system is againiin readiness to operate underthe-influence of a train travelling in either direction.

It will be noted from th4 foregoing de# scription that the traininitiates a sequence. of controls whereby its paing through they controlzone in either direction causes a predetermined series of operationstotake place'. regardless of its direction of movement, and is atall timesscf/to operate.

vInf-.addition ro the foregoing, and as 'a means for givingv doublewarning, one t'o the vehicular traiiic'and one to the traintraic uponany change occuring in the operative condition of my system or upon theoccurring of some undesirable condition of operation, I

:have provided'in association with my system are shown separately fromthe traiccontrol e had to Fig..

6 in which, for clearness, such alarm circuits circuits although underthe control thereof 'as will now be pointed out. f

` As previously referred to, the gate posts P being hollow, wiring 3-4permits the light signals L thereon to be permanently lit, and accordingto gate position to show clear or dangerin either direction ofcross'traic. In addition, I have provided means for enabling theengineer of thetrain to receive a check signal, while in transit, toassure -him that the safety system is operatinggand in suliicienttime topermit him to stop his train, when warned of the non-functioning orinterference with the system.` Substantially'simultaneously -therewith awarning of train y approach is given to vehicular traic by an such asahorn 41, Fig. 6,. and

audible signal, also a visible warning by the lieretoforedw scribedlights L.

thereto, to operatively oscillate with the gates, from one positiontothe other', and at the terminal points are located contacts 43-44, the

contacts 44 being preferably arcuate and separated slightly from thecontacts- 43, Aso i that a slight movement of the gates will close thelightsignal and horn circuits, and thus immediately give warning tovehicular traffic of train approach and closure of right of way. Thecurrent therefor is supplied through the leads 3 from the main 12, whenVthe posts Pare in either position.

In thepost switch position shown in Fig. 6, only one set of lights arein circuit, such as z; these all being red lights, and are set againstthe train, showing that the track is blocked. These lights, however, inactual practice are placed at interval of about one third of a mileapa-rt, and-the control switch 7-8-9 10 and arm-.10 still further awayso that the {irst contact-of the train with the system will cause theg-ate posts P4 to operate, whereupon the gates s ift,'and the lightsz goout and the second circuit or green lights a light up, therebyindicatinv to the engineerl that the crossing is proper y arded.

If the crossing is b ocked however, gates are interfered with'so thatthey cannot close then-the warning red lights a remain lit, and theengineer brings his train to a stop.

`The train in leaving the crossing control and the I section, aspreviously set forth, causes a reversal of the entering cycle, and-uponthereturn ofthe gates to initial position, the lights sequentiallyblocking and permitting passage t of said trafiic at .said crossing,means operated by electricity for moving said blocking means, a firstelectric ,Contact means arranged in the line of passage of one of saidtraffics and electrically connected with said -electrically operatedmeans for moving, a second electric contact means arranged in tli'esameline of traffic as the first contact means and electrically connectedwith said electrically operated means for moving, means forv supl invelectric current and a switch coo )erating between said currentsupplying means and said first and second contact means, said switchbeing operated by a vehicle' moving along the linc of trafiic which haslsaid elec:

tric contact means therein, said vehicle being provided with meansfor'contactmg in turn said first and second contact means, contactofsaid meansof the vehicle with the first electric Contact means causingoperation of said electrically operated means for moving.

said blocking means from position blocking the line of traffic havingsaid electricv contact means therein to position for blocking the otherline of traffic and contact of said means of the vehicle with saidsecond electric contact means causing. operation of said electricallyoperated means for moving said blocking means from its last mentionedblocking position to its former blocking position.

2. In a safety device for a crossing'fo'rmedtheintersection4 of a lineof track controlled traic and a line of road traffic, in combination,means arranged at opposite sides of the track controlled traffic forsequentially blocking the track controlled and' road traf,-

fic means operated by electricity for moving said blocking means,electric contact means arranged in the lineof laterally thereof andelectrically connected with said electrically operated means' formoving, the line of the track controlled .traffic and distant from saidblocking means laterally thereof in direction opposite the firstmentioned contact means and electrically connected with saidelectrically operated means frominoving, means for supplying electriccurrent, and

gates, a ,arranged in the line of the track controlled the track,controlled .trafiic and distant from said blockingv meanselectriccontact means arranged in' a vswitch cooperating mentioned contactmeans, .said switch being operated by a moving trackv controlled vehicleprovided with means for contacting in turn said' firstl and secondmentioned electric contact means, contact of said means of the vehiclewith theA first mentioned contact means causingv Yoperation 'of saidelectrically" operated means formoving said blocking means fromposition.,i for blocking the tract contrafiic and Contact of said meansofl the vehicle Awith vthe secondl mentioned contact `means causingoperation of said. electrically operated means for moving said blockingbetween said means for supplying current and said first and secondtrolled trafi'ic to position for blocking the road y means `fromposition' for blockingthe roadv traffic to its formerposition. Y Y

3. 'In a safetyy device for a crossing formed by the intersection of aline of track controlled traffic and -a `lineof road traffic, incombination, gates for sequentially blocking and permitting passage ofsaid trafiic at said crossing meansoperated by electricity Jfor movingsaid first assemblage of electric contacts traffic and electricallyconnected to said electrically operated means for-moving, a secondassemblage of electric contacts arranged in the line' of the trackcontrolled traiiic and electricallyconnected withsaid electricallyoperated means for. moving, means for supplying electric current, and aswitch cooperating between said'means for supplying current and saidfirst and second contact assemblages', said switch being operated by amoving track controlled vehicle provided with means for contacting inturn said irst and second assemblages, contact of said means of thevehicle with said first assemblage causing operation of saidelectrically operated means for moving said gates from position blockingthe track controlled traffic to position for blocking the road trafficand contact of said means ofthe vehicle with said` second assemblage`causing operation ofi-said electrically'operated means for moving saidgates from positionv blocking the-road traffic to their former position.V

4.- In a safety .device for a crossing formed bythe intersection of aline of .track controlled trafiic and a line of road traffic, incombination` gates arranged on opposite sides of 'the track controlledtrailic for sequentially blocking and permitting passage of saidtraffics at said crossing, an electric motor for each of sa id gatesVfor `mOvingthe gate, a first electric Contact means-:arranged inQtheline of the track controlle ,1 --fiic and electrically connected. withboth said motors, a second electric contact means arranged in the line of the track controlled trafc and electrically connected with both saidmotors, plyinelectric'current, and a switch cooperating etween saidmeans for supplying curmeans for suprent vand said first and secondelectric contact, means, said switch being operated by a moving trackcontrolled vehicle provided with means for contacting in turn said firstand second electric contact means, contact of-said means of the vehiclewithV said iirst contact means causing operationof saidmotors for movingsaid gates from position blocking the track controlled traiiic toposition for blocking the road traiiic and contactof said means of thevehicle with said second contact means causing operation of said motorsfor moving said gates from position blocking the road traiiic 'to theirformer position.

5. In a safety device for a crossing formed by the intersection, of aline 'of track con-A trolled trafiic and a line of roady traflic, incombination, posts on opposite sides of the track controlled 'traflicand axially rotatable in opposite directions, a gate on each postswinglngly 'movable in opposite directions by rotation of the post,electrcall operated means for rota-ting said posts, a rst assemblage ofelectric contacts arranged ln the line of track controlled trafiic onone side of said gates and electrically connected with said electricallyo erated means for rotating, a

second assem lage of electric contacts arranged'in the line of the trackcontrolled traiiic on the side of said gates opposite the flrstmentionedside and electrically connected-withY said electrically operated meansfor rotating, means for supplying electric current, and a switchcooperating between said means or supplying current and said first andsecond assem lages,"said switch bein operated bya moving trackcontrolled vei'cle provided with means or contacting in turn said iirstand second assemblages, contact of said means of the vehicle with saidfirst assemblage causing operation of said electrically operated meansfor rotating for moving said ates from posit-ion blocking the trackcontrol edtrafiic 'to position for blocking-the road traiiic and Contactof said meansof the vehicle with said second assemblage ,causingoperation` of Xsaid electrically operated means for rotating for movingsaid gates from position'bloeking the road traine to their formerposition.

6. I n a safety devicefor road crossings, incombination, means movableinopposite directions for sequentially blocking intersecting ,linesl oftraino, first and second electric contact means located in oneofj'thelines of said traflic and adapted for successive operation, means forsupplying electric current, and means cooperating between said currentsupplying means and' said blocking means and including means for movinga switch, said switch being operated vby a vehicle moving in the line oftraflic having said electric contact means therein, said vehicle'operating in turn said electric contact means, operation by saidvehicle of said first electric contact 'ing in the line of traiic havincombination, means movable in opposite directions, for sequentiallyblocking intersecting lines of trafiic, electrically operated means formoving said blockingmeans, first v and second electric Contact meanslocated in one of the lin'esof said trafiic and adapted for successiveoperation and electrically connected to said lelectrically operatedmeans for moving, means for supplying electric cur-H rent, and acontactible switch cooperating between said means for supplying currentto said first and second electric contact means, said switch beingoperated by a vehicle movg said electric contact means therein, saidvehicle being provided with means for contacting in turnsaid first andsecond electric contact means, contact-of said means of the' vehiclewith said first contact means causing o eration of said electricallyoperatedmeans or moving said blocking meansin one'direction and contactof said means of the vehicle with-said second means causing operationof-said electrically operated means for moving said blocking means indirection reverse to the first direction. f

8. In a safety device for road crossings, in combination, gates movablein opposite'di.-

rections for sequentially blocking intersect` inglines of trafiic, firstand second electric contact assemblageslocated in one of said lines oftraffic and spaced apart therein for operatign in turn, said assem lagesincluding groups of electric contact members, said groups being adaptedfor successive operation, means for supplying electric current,

and means cooperating between said current supplying means and saidgates and includ- A l ing electrically operated means for moving thegate and a switch for connecting the current supplying-means to theassemblages,

said switch being operatedby a vehicle moving in the'line of trafiic.having said assembla es therein, saidcvehicle operating in turn saidassemblages by operating successively the groups of contact members inthe assemblages, operation by said vehicle of said first l assemblagecausing movement of said atcs in one direction and operation by said veicle of said second assemblage causin movefirst direction, successiveoperation by said vehicle of the grou s of contact members included inthe assem lages causing movement of one of the gates in advance of theother gate when the gates are moved in either irection. Y i 9. In a.safety device for a road crossin formed by the intersection of two lines0% -ment of said gates in direction opposite `to the traffic incombination, anassemblage ofelec-V tric contacts arranged in one of saidlines of traffic and consisting cfr-a plurality of groups of contactmembers, means in the other line of traffic successively movable toclose the same, said closing meansbeing connecte-d to said groups, saidAgroups being adapted for successive operation of the groups, and meansfor successively operatingb the lgroups and appurtenant to a vehiclelmoving along said line of traffic.

10. In a safety device for aroad crossing formed by the intersection oftwo lines of traffic successively movable,said groups being d operablesuccessively to close said gate means, v and bridging means appurtenantto a vehicle,-

4 moving lalong said line of traffic and engage'- able with said groupsfor successively operating the groups. y

1l. Iii a safety device for ioad crossings,`in combination, means.successively movable in opposite directions for sequentially blockingsively axially rotatable in 'forward andare` and clearing intersectinglines of' trafc, warning signals appurtenant to onev of said lines oftraffic and remote from said blocking l means and indicating danger whenthe line of Itraffic to which said signals ap ertain is blocked and theother line is c ear, and means cooperating between said blocking meansand warning signals for maintainin said signals at danger in the eventof failure of said blocking means to move to position for clearing theline of traffic' to which said signals appertain and blocking the otherline of traffic. A

12. In a safety device forintersecting passages for traffic, incombination,pos'ts succesverse directions, gates secured to the postsand swingingly movablefin forward and' re.- verse directions 4by'rotation of the posts, warning signals remote from said gates, thegates, when the posts are rotated in one direction, being swinginglymoved for clearing one of the intersecting assages and blocking theother passage an when the posts are rotated. in the reverse directionbeing swingingly moved for clearing .the last mentioned Y passage andblocking the fiist mentioned pasl sage, and electric means cooperatingbetween the posts and warning signals for o erating the signalsrespectively to warn tra c in one passage in the event of failure of thegates to move to position for clearing said one passageand blocking theother passage.

13. In a safety device associated with a crossing formen by theintersection of a pas-- sage for track 'controlled traffic and a passagefor road traffic, in combination, posts axially rotatable in forwardvand reverse directions, gates secured to .the posts andswinginglymovable by rotation of the posts for sequentially blocking and clearingthe passage for track controlled trafHc and the passage forv roadtraffic, warning signals arranged along' the line of passage ofthetrack-controlled traffic andremote from said gates and appurtenant tosaid traffic, and' means cooperating between the posts and said signalsfor maintainingthe signals set as'indic ating danger for the trackcontrolled traffic in the event of failure of the gates in theirmovement to block the road traffic and means'to successively 'actuatesaid'posts. V Y

14. In a safety device associated with a crossing formed by theintersection of a passage for track controlled traffic and a passage forroad traffic, in combination, posts axially rotatable inlforward andreverse directions,

`gates secured to the posts and swingingly movable by-rota-tion of theposts for blocking and clearing the passagefor track controlled trafficand thepassage for road traffic, a post and its gate being arranged oneach side of the track controlled traffic, and means for rotatf ingthe'post-s, said means being adapted for rotating one of theposts toswing its gate in advance of the rotation by said means of the otherpost and the swinging of the gate of the other post for preventinginterference between the gates in their swinging movement.

15. In a safet device associated with a crossing formed y theintersection of a passage for track controlled traffic and a passage forroad trafiic, in combination, posts axially rotatable in forward andreverse directions, gates secured to the posts and swingingly movable byrotation ofthe posts for blocking Aand clearing the-passage for trackcontrolled traffic and the passage for road traffic, electricallyoperable means for rotating the posts,

and electric contacts arranged in the line of passage of the trackcontrolled traffic and operatively connected to said electricallyoperable means for operating the same, a post and its gate beingarranged onI cach side of the track controlled traffic and said contactsbeing adapted for operating said electrically operable means to rotateone of said posts to swing its gate in advance ofthe rotation by saidmeans of the other post and the swinging of the gate of the otherpostcfor preventing interference between the gates in their swingingmovement.

' 16.. In a safet device associated with aI crossing formedy theintersection of a passage for track controlled traffic and a passage forroad traffic, in combination, posts axially rotatabley in vforward andreverse directions, a motor for each of thel posts foigrotating thepos't, gates secured to the posts and swingbetween the gates in their"trame, and means for operatingthe motors for rotating the p osts, apost and its gate being'arranged on each side of the track controlledtraiic and said means-being adapted for operating the motor for rotatingone of said posts to swing its gate in advance of operationby said meansofthe motor for rotating the other post and swinging of the gate of theother 'post-for preventing interference swinging movement.

17; In a safety device associated with a crossing formed by theintersection of a passage for track controlled traliic and a passage forroad-traiiic, in combination, a source of supply of electricity, postsaxially rotatable in forward and reverse directions, gates secured tothe posts and swingingly movable by rotation of the posts for blockingand clearing the passage for'track controlled traftic and the passagefor road traiiic, electrically operablemeans for rotating the posts,electric contacts arranged in the line of passage of the trackcontrolled traiiic between the tracks thereof and operativelyconnectedto said electrically operable means for operating the same,andan electricswitch located between said tracks and operativelyconnected to the source of electricity and to said contacts and operablebymeans appurtenant to a veu hicle travelling in the line lof passage ofthe track controlled trafiic.

18. In a safety'device associated with a sage for track controlledtraiiic and a passage for road traflic, in-combination, a source ofsupply of electricity, posts axially rotatable in forward and reverse'directions, gates secured to the osts and swingingly movable by rotationcip the posts for blocking and clearing the passage for track controlledtra-ffic and the passage for road trai'lic, electrically operable meansfor rotating the posts, warning signals supported by the posts andcommon to both the passages for traiiic and operable by rotation o'f theposts, warning signals arrangedq along the line of passage of the trackcontrolled traicand appurtenant to said passage and operated by rotationof the posts, electric contacts arranged in the ,line of passage of thetrack controlled trafiic and operatively connected to saidelectricallyoperable means for operating the same, and an electric switchoperatively .connected to the source of electricity and to said contactsand operable by means appurtenant to a vehicle travelling in the lineofpassage of the track 'controlled trafc, said'velucle being providedwith means for contacting said electric contacts during passage of saidvehicle for` opetating the contacts. v

19. In f t-zsafetgpv device 'associated with a crossing formed by theintersection-of ai'passage for track controlled traic and a passage vforroad trac, in combination, posts axially rotatable 1n forward andreverse d1rect1ons,'.

" traic and the passage for road traiiic, electric warning signalsarranged along the line of passage ofthe trackcontrolled traiic andremote from the gates, and, electric means cooperating between the'posts and said distant signals for operating said signals by rotationof the posts, and automatically operable means to successively actuatesaid posts. 20. In a safety device for road crossings, the combinationof means successively movable for blocking a road at the crossing; meansappurtenant to one ofthe roads remote from the blocking means forautomatically successively controlling the blocking means; and signalmeans appartenant to one of said roads and remote from the blockingmeans and controlled by the blocking means..v

21.. In a safety device for'road crossings,

appurtenant to saidv last named road remote from 'the blocking means andcontrolled byl the blocking means.' 22. In a safety device for roadcrossings, the 'combination of a single pair of successively movablegates at opposite sides of both roads of the crossing for blocking theroad at the crossing and closer to each other than the width of thegate; means for automatically successively actuating the gates.

23.'I1a safety device for road crossin S, the combination vof a pair ofsuccessive y movable means on opposite sides of said crossing Vforblocking the road at the crossing and a pair of means appurtenant tosaid road remote respectively diiii'erent distances from the crossingand operable by a passing vehlcle for respectively successivelyoperating the blocking means respectively.

Signed at New York, in the county of New York and State of Nevlork, this22nd day of September, A. iD. 1924.

BERT Bisio.

